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Class weka.classifiers.j48.ClassifierSplitModel 

java.lang.Object
   |
   +----weka.classifiers.j48.ClassifierSplitModel
public abstract class ClassifierSplitModel
extends Object
implements Cloneable, Serializable
Abstract class for classification models that can be used recursively to split the data.

Version:
$Revision: 1.3 $
Author:
Eibe Frank (eibe@cs.waikato.ac.nz)

Constructor Index

o ClassifierSplitModel()

Method Index

o buildClassifier(Instances)
Builds the classifier split model for the given set of instances.
o checkModel()
Checks if generated model is valid.
o classifyInstance(Instance)
Classifies a given instance.
o classProb(int, Instance)
Gets class probability for instance.
o clone()
Allows to clone a model (shallow copy).
o codingCost()
Returns coding costs of model.
o distribution()
Returns the distribution of class values induced by the model.
o dumpLabel(int, Instances)
Prints label for subset index of instances (eg class).
o dumpModel(Instances)
Prints the split model.
o leftSide(Instances)
Prints left side of condition satisfied by instances.
o numSubsets()
Returns the number of created subsets for the split.
o rightSide(int, Instances)
Prints left side of condition satisfied by instances in subset index.
o setDistribution(Distribution)
Sets distribution associated with model.
o sourceClass(int, Instances)
o sourceExpression(int, Instances)
o split(Instances)
Splits the given set of instances into subsets.
o weights(Instance)
Returns weights if instance is assigned to more than one subset.
o whichSubset(Instance)
Returns index of subset instance is assigned to.

Constructors

o ClassifierSplitModel 
 public ClassifierSplitModel()

Methods

o clone 
 public Object clone()
Allows to clone a model (shallow copy).

Overrides:
clone in class Object
o buildClassifier 
 public abstract void buildClassifier(Instances instances) throws Exception
Builds the classifier split model for the given set of instances.

Throws: Exception
if something goes wrong
o checkModel 
 public final boolean checkModel()
Checks if generated model is valid.

o classifyInstance 
 public final double classifyInstance(Instance instance) throws Exception
Classifies a given instance.

Throws: Exception
if something goes wrong
o classProb 
 public double classProb(int classIndex,
                         Instance instance) throws Exception
Gets class probability for instance.

Throws: Exception
if something goes wrong
o codingCost 
 public double codingCost()
Returns coding costs of model. Returns 0 if not overwritten.

o distribution 
 public final Distribution distribution()
Returns the distribution of class values induced by the model.

o leftSide 
 public abstract String leftSide(Instances data)
Prints left side of condition satisfied by instances.

Parameters:
data - the data.
o rightSide 
 public abstract String rightSide(int index,
                                  Instances data)
Prints left side of condition satisfied by instances in subset index.

o dumpLabel 
 public final String dumpLabel(int index,
                               Instances data) throws Exception
Prints label for subset index of instances (eg class).

Throws: Exception
if something goes wrong
o sourceClass 
 public final String sourceClass(int index,
                                 Instances data) throws Exception
o sourceExpression 
 public abstract String sourceExpression(int index,
                                         Instances data)
o dumpModel 
 public final String dumpModel(Instances data) throws Exception
Prints the split model.

Throws: Exception
if something goes wrong
o numSubsets 
 public final int numSubsets()
Returns the number of created subsets for the split.

o setDistribution 
 public final void setDistribution(Distribution distribution)
Sets distribution associated with model.

o split 
 public final Instances[] split(Instances data) throws Exception
Splits the given set of instances into subsets.

Throws: Exception
if something goes wrong
o weights 
 public abstract double[] weights(Instance instance)
Returns weights if instance is assigned to more than one subset. Returns null if instance is only assigned to one subset.

o whichSubset 
 public abstract int whichSubset(Instance instance) throws Exception
Returns index of subset instance is assigned to. Returns -1 if instance is assigned to more than one subset.

Throws: Exception
if something goes wrong 
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